Home / 8,178.80-11,286.40-4,641.93

Finding the Fourth Proportional to 8,178.80, 11,286.40 and 4,641.93

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Solution

The fourth proportional to 8,178.80, 11,286.40 and 4,641.93 is: 6,405.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.80 : 11,286.40 = 4,641.93 : x
  2. Step 2: Convert to fraction form
    8,178.80/11,286.40 = 4,641.93/x
  3. Step 3: Cross multiply
    8,178.80x = 11,286.40 × 4,641.93
  4. Step 4: Simplify right side
    8,178.80x = 52,390,678.75
  5. Step 5: Solve for x
    x = 52,390,678.75/8,178.80
  6. Step 6: Final answer
    x = 6,405.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.